Rolex Datejust 31 Yellow Gold — Fluted Bezel Dark Mother-of-Pearl Diamond Dial | Ref. 278278

The 278278 is a contemporary Datejust 31 executed entirely in 18ct yellow gold — a configuration that keeps the model within the mid-size Datejust family while elevating it firmly into the precious-metal tier. At 31 mm, the case bridges the gap between the Lady-Datejust 28 and the full Datejust 36, making it a versatile choice that wears comfortably across a broad range of wrist sizes. The dark mother-of-pearl dial with diamond hour markers provides a contrast that is distinctly modern: deep, shifting colour that reads differently under artificial versus natural light, framed by the fluted yellow gold bezel that anchors the piece in classic Rolex idiom.

The 278xxx reference series houses the Calibre 2236, a manufacture movement developed specifically for Rolex's mid-size models and notable for incorporating a Syloxi silicon hairspring for improved magnetic resistance and long-term accuracy stability. The movement beats at 28,800 vph and provides a 55-hour power reserve — a meaningful advance over the earlier 2235 it succeeded. An all-yellow gold construction, including case and bracelet, ensures every element is coherent in both material and tone.

Collectors looking at the 278278 will find a watch that occupies a well-defined niche: precious-metal Datejust at a scale that isn't dominated by the 41 mm Men's references, with a dial configuration that skews toward statement jewellery without crossing fully into the Pearlmaster category. Yellow gold Datejust 31s with diamond dials perform reliably on the secondary market, and the 278xxx generation benefits from the more modern movement relative to its predecessors. It suits buyers who want a recognisably luxurious Rolex that is still sized for everyday elegance.